Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Influence of alternative rice husk ash filler on bitumen emulsion-based recycled asphalt
The influence of rice husk ash (RHA) as an alternative active filler on the mechanical properties of bitumen emulsion-based recycled asphalt specimens in high- and low-temperature domains was investigated. The experimental methodology was comprised of static indirect tensile and wheel-tracking testing, as well as scanning electron microscopy using secondary electrons and energy dispersive X-ray spectroscopy. The results showed that the increase in the mass fraction of RHA gradually improved the water sensitivity and the high-temperature performance of specimens, but also negatively affected their low-temperature performance. The mass fraction of RHA above 1.5%, resulted in a tensile strength ratio after freeze–thaw and immersion of more than 80%, and in the dynamic stability in rutting test above 4500 mm−1, but also the low-temperature indirect tensile strength below 2.0 MPa. Considering the relevant regulations, the mass fraction of RHA should be in the range of 1–1.5%.
Influence of alternative rice husk ash filler on bitumen emulsion-based recycled asphalt
The influence of rice husk ash (RHA) as an alternative active filler on the mechanical properties of bitumen emulsion-based recycled asphalt specimens in high- and low-temperature domains was investigated. The experimental methodology was comprised of static indirect tensile and wheel-tracking testing, as well as scanning electron microscopy using secondary electrons and energy dispersive X-ray spectroscopy. The results showed that the increase in the mass fraction of RHA gradually improved the water sensitivity and the high-temperature performance of specimens, but also negatively affected their low-temperature performance. The mass fraction of RHA above 1.5%, resulted in a tensile strength ratio after freeze–thaw and immersion of more than 80%, and in the dynamic stability in rutting test above 4500 mm−1, but also the low-temperature indirect tensile strength below 2.0 MPa. Considering the relevant regulations, the mass fraction of RHA should be in the range of 1–1.5%.
Influence of alternative rice husk ash filler on bitumen emulsion-based recycled asphalt
Yan, Kezhen (Autor:in) / Yang, Kun (Autor:in) / Long, Zhengwu (Autor:in) / Miljković, Miomir (Autor:in) / Zhou, Wujun (Autor:in) / Liu, Kai (Autor:in) / You, Lingyun (Autor:in)
Road Materials and Pavement Design ; 24 ; 1507-1521
03.06.2023
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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